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Brand
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Type
SubwooferWooferMid BassMid-rangeFull-rangeCoaxial2 Way2 Way Kit3 WayBass Guitar SpeakerGuitar SpeakerLow frequencyMiniatureShallow SubwooferShallow WooferShallow Mid-WooferTriaxial
Available on
Amazon.comParts Express
•
Nominal diameter
″
•
SensitivitySPL1W
dB

Thiele & Small parameters

•
Resonance frequencyfS
Hz
•
Mechanical quality factorQMS
•
Electrical quality factorQES
•
Total quality factorQTS

Large signal parameters

•
Maximum linear excursionxmax
mm
•
Air volume displaced at xmaxVD
cm³
•
Program powerPmax
W

Voice Coil & Magnet

•
Nominal impedanceZ
Ω
•
DC resistanceRE
Ω
•
Force factorBl
N/A
•
Motor constantBl/√RE
N/√W
•
InductanceLE
mH
•
VC Diameter
mm

Diaphragm

•
Effective diameter
mm
•
Effective areaSD
cm²
•
Moving massMMS
g

Suspensions

•
StiffnessKMS
N/mm
•
ComplianceCMS
µm/N
•
Equivalent volume to CMSVAS
L
•
Mechanical resistanceRMS
N·s/m

Dimensions

•
Overall size
mm
•
Baffle cutout diameter
mm
•
Overall depth
mm
•
Mounting depth
mm
•
Volume occupied
L
•
Net weight
kg
STX F.18.140.4.MCX Full-range

STX F.18.140.4.MCX

4 Ω
8″ Full-range
fS49 Hz
SD133 cm²
50 - 20000 Hz
QTS0.71
xmax4 mm
SPL1W86.5 dB
Bl/√RE1.84
Pmax140 W
STX F.18.140.4.WMCX Full-range

STX F.18.140.4.WMCX

4 Ω
8″ Full-range
fS52 Hz
SD133 cm²
50 - 20000 Hz
QTS0.71
xmax4 mm
SPL1W86.9 dB
Bl/√RE1.88
Pmax140 W
STX F.18.140.8.MCX Full-range

STX F.18.140.8.MCX

8 Ω
6.5″ Full-range
fS51 Hz
SD133 cm²
50 - 20000 Hz
QTS0.79
xmax4 mm
SPL1W86.6 dB
Bl/√RE1.68
Pmax140 W
STX F.18.140.8.WMCX Full-range

STX F.18.140.8.WMCX

8 Ω
8″ Full-range
fS54 Hz
SD133 cm²
50 - 20000 Hz
QTS0.81
xmax4 mm
SPL1W86.5 dB
Bl/√RE1.68
Pmax140 W
STX F.30.300.8.MC Full-range

STX F.30.300.8.MC

8 Ω
12″ Full-range
fS55 Hz
SD490 cm²
50 - 15000 Hz
QTS1.51
xmax4 mm
SPL1W89.6 dB
Bl/√RE2.87
Pmax300 W
STX M.11.100.8.MC Mid-range

STX M.11.100.8.MC

8 Ω
4.5″ Mid-range
fS110 Hz
SD57 cm²
150 - 15000 Hz
QTS1.12
xmax1 mm
SPL1W87.9 dB
Bl/√RE1.15
Pmax100 W
STX M.12.140.8.MC Mid-range

STX M.12.140.8.MC

8 Ω
4.5″ Mid-range
fS88 Hz
SD57 cm²
100 - 15000 Hz
QTS0.85
xmax1.5 mm
SPL1W84 dB
Bl/√RE1.57
Pmax140 W
STX M.12.140.8.WMC Mid-range

STX M.12.140.8.WMC

8 Ω
4.5″ Mid-range
fS95 Hz
SD57 cm²
100 - 15000 Hz
QTS0.88
xmax1.5 mm
SPL1W84.9 dB
Bl/√RE1.52
Pmax140 W
STX M.15.150.8.MCX Mid-range

STX M.15.150.8.MCX

8 Ω
6″ Mid-range
fS70 Hz
SD87 cm²
150 - 15000 Hz
QTS0.61
xmax2 mm
SPL1W86.5 dB
Bl/√RE1.99
Pmax150 W
STX M.15.250.8.FCX Mid-range

STX M.15.250.8.FCX

8 Ω
6″ Mid-range
fS58 Hz
SD95 cm²
100 - 10000 Hz
QTS0.30
xmax2.3 mm
SPL1W88.6 dB
Bl/√RE3.7
Pmax250 W
STX M.16.120.8.MC Mid-range

STX M.16.120.8.MC

8 Ω
6.5″ Mid-range
fS95 Hz
SD143 cm²
100 - 8000 Hz
QTS1.46
xmax1 mm
SPL1W89.7 dB
Bl/√RE1.48
Pmax120 W
STX M.18.140.8.MC Mid-range

STX M.18.140.8.MC

8 Ω
8″ Mid-range
fS53 Hz
SD143 cm²
70 - 10000 Hz
QTS0.67
xmax1.5 mm
SPL1W87.4 dB
Bl/√RE2.06
Pmax140 W
STX M.18.140.8.WMC Mid-range

STX M.18.140.8.WMC

8 Ω
8″ Mid-range
fS51 Hz
SD143 cm²
70 - 10000 Hz
QTS0.69
xmax1.5 mm
SPL1W88 dB
Bl/√RE1.88
Pmax140 W
STX M.18.200.8.MCX Mid-range

STX M.18.200.8.MCX

8 Ω
8″ Mid-range
fS70 Hz
SD143 cm²
150 - 10000 Hz
QTS0.45
xmax3 mm
SPL1W89.6 dB
Bl/√RE3.1
Pmax200 W
STX W.11.100.8.MC Mid Bass

STX W.11.100.8.MC

8 Ω
4.5″ Mid Bass
fS84 Hz
SD57 cm²
80 - 15000 Hz
QTS0.70
xmax3 mm
SPL1W83.2 dB
Bl/√RE1.75
Pmax100 W
STX W.12.100.8.MC Mid Bass

STX W.12.100.8.MC

8 Ω
4.5″ Mid Bass
fS76 Hz
SD57 cm²
70 - 15000 Hz
QTS0.74
xmax4 mm
SPL1W83.6 dB
Bl/√RE1.57
Pmax100 W
STX W.12.100.8.WMC Mid Bass

STX W.12.100.8.WMC

8 Ω
4.5″ Mid Bass
fS77 Hz
SD57 cm²
70 - 15000 Hz
QTS0.70
xmax4 mm
SPL1W83.7 dB
Bl/√RE1.57
Pmax100 W
STX W.15.140.8.MCX Mid Bass

STX W.15.140.8.MCX

8 Ω
6″ Mid Bass
fS45 Hz
SD87 cm²
50 - 10000 Hz
QTS0.36
xmax4 mm
SPL1W86.7 dB
Bl/√RE2.26
Pmax140 W
STX W.15.160.16.FCX Mid Bass

STX W.15.160.16.FCX

16 Ω
6″ Mid Bass
fS38 Hz
SD95 cm²
30 - 10000 Hz
QTS0.36
xmax5.3 mm
SPL1W87.1 dB
Bl/√RE2.41
Pmax160 W
STX W.15.160.8.FCX Woofer

STX W.15.160.8.FCX

8 Ω
6″ Woofer
fS37 Hz
SD95 cm²
30 - 10000 Hz
QTS0.35
xmax5.3 mm
SPL1W86.4 dB
Bl/√RE2.61
Pmax160 W
STX W.16.50.4.MC Mid Bass

STX W.16.50.4.MC

4 Ω
6.5″ Mid Bass
fS66 Hz
SD143 cm²
50 - 8000 Hz
QTS1.01
xmax3 mm
SPL1W86.9 dB
Bl/√RE1.85
Pmax50 W
STX W.16.50.8.MC Mid Bass

STX W.16.50.8.MC

8 Ω
6.5″ Mid Bass
fS59 Hz
SD143 cm²
50 - 8000 Hz
QTS1.07
xmax3 mm
SPL1W86.1 dB
Bl/√RE1.35
Pmax50 W
STX W.18.140.4.MCX Low frequency

STX W.18.140.4.MCX

4 Ω
8″ Low frequency
fS40 Hz
SD143 cm²
40 - 8000 Hz
QTS0.36
xmax4 mm
SPL1W88 dB
Bl/√RE3.03
Pmax140 W
STX W.18.140.4.WMCX Mid Bass

STX W.18.140.4.WMCX

4 Ω
8″ Mid Bass
fS40 Hz
SD143 cm²
40 - 8000 Hz
QTS0.37
xmax4 mm
SPL1W87.8 dB
Bl/√RE3.14
Pmax140 W
STX W.18.140.8.MCX Low frequency

STX W.18.140.8.MCX

8 Ω
8″ Low frequency
fS37 Hz
SD143 cm²
40 - 8000 Hz
QTS0.39
xmax4 mm
SPL1W87.2 dB
Bl/√RE2.7
Pmax140 W
STX W.18.140.8.WMCX Mid Bass

STX W.18.140.8.WMCX

8 Ω
8″ Mid Bass
fS38 Hz
SD143 cm²
40 - 8000 Hz
QTS0.40
xmax4 mm
SPL1W87.1 dB
Bl/√RE2.64
Pmax140 W
STX W.18.180.16.FCX_v2 Mid Bass

STX W.18.180.16.FCX_v2

16 Ω
8″ Mid Bass
fS37 Hz
SD125 cm²
40 - 10000 Hz
QTS0.36
xmax6.3 mm
SPL1W87.6 dB
Bl/√RE2.85
Pmax180 W
STX W.18.180.8.FCX_v2 Mid Bass

STX W.18.180.8.FCX_v2

8 Ω
8″ Mid Bass
fS36 Hz
SD125 cm²
40 - 10000 Hz
QTS0.35
xmax6.3 mm
SPL1W87.5 dB
Bl/√RE3.03
Pmax180 W
STX W.18.200.8.FGX_v3 Mid Bass

STX W.18.200.8.FGX_v3

8 Ω
8″ Mid Bass
fS35 Hz
SD133 cm²
40 - 8000 Hz
QTS0.36
xmax6 mm
SPL1W86.3 dB
Bl/√RE3.04
Pmax200 W
STX W.18.200.8.MCX_v3 Mid Bass

STX W.18.200.8.MCX_v3

8 Ω
8″ Mid Bass
fS34 Hz
SD133 cm²
40 - 8000 Hz
QTS0.35
xmax6 mm
SPL1W86.3 dB
Bl/√RE3.07
Pmax200 W
STX W.18.220.8.MCX Woofer

STX W.18.220.8.MCX

8 Ω
8″ Woofer
fS39 Hz
SD133 cm²
40 - 8000 Hz
QTS0.30
xmax6 mm
SPL1W88.3 dB
Bl/√RE3.1
Pmax220 W
STX W.20.140.8.MC Low frequency

STX W.20.140.8.MC

8 Ω
8″ Low frequency
fS27 Hz
SD224 cm²
30 - 6000 Hz
QTS0.45
xmax4.5 mm
SPL1W87.2 dB
Bl/√RE2.61
Pmax140 W
STX W.20.300.2x2.MC Subwoofer

STX W.20.300.2x2.MC

2 x 2 Ω
8″ Subwoofer
fS33 Hz
SD214 cm²
35 - 500 Hz
QTS0.39
xmax9 mm
SPL1W85.1 dB
Bl/√RE5.06
Pmax300 W
STX W.20.300.2x4.MC Subwoofer

STX W.20.300.2x4.MC

2 x 4 Ω
8″ Subwoofer
fS35 Hz
SD214 cm²
35 - 500 Hz
QTS0.42
xmax9 mm
SPL1W85.6 dB
Bl/√RE5.17
Pmax300 W
STX W.20.80.4.MC Low frequency

STX W.20.80.4.MC

4 Ω
8″ Low frequency
fS48 Hz
SD214 cm²
50 - 10000 Hz
QTS0.97
xmax3.5 mm
SPL1W86.5 dB
Bl/√RE2.16
Pmax80 W
STX W.20.80.8.MC Woofer

STX W.20.80.8.MC

8 Ω
8″ Woofer
fS32 Hz
SD214 cm²
30 - 10000 Hz
QTS0.68
xmax3.5 mm
SPL1W86.4 dB
Bl/√RE2.06
Pmax80 W
STX W.22.200.8.MCX_v4 Woofer

STX W.22.200.8.MCX_v4

8 Ω
8″ Woofer
fS26 Hz
SD214 cm²
40 - 6000 Hz
QTS0.39
xmax5 mm
SPL1W87.8 dB
Bl/√RE2.73
Pmax200 W
STX W.22.250.8.FCX Low frequency

STX W.22.250.8.FCX

8 Ω
8″ Low frequency
fS28 Hz
SD214 cm²
QTS0.34
xmax6.5 mm
SPL1W85.8 dB
Bl/√RE4.87
Pmax250 W
STX W.25.200.8.MC Woofer

STX W.25.200.8.MC

8 Ω
10″ Woofer
fS28 Hz
SD345 cm²
40 - 3000 Hz
QTS0.36
xmax4.5 mm
SPL1W88.9 dB
Bl/√RE4.86
Pmax200 W
STX W.25.300.8.MC_v2 Low frequency

STX W.25.300.8.MC_v2

8 Ω
10″ Low frequency
fS65 Hz
SD346 cm²
60 - 8000 Hz
QTS0.68
xmax4 mm
SPL1W91.9 dB
Bl/√RE4.06
Pmax300 W